Jenna Douros’ HIIT workout sampler

  Designed to get your heart rate high and burn max calories this HIIT circuit by Jenna Douros will also help you improve your muscle endurance and cardiovascular fitness.           It requires only your body weight, so you can perform the workout literally anywhere. Complete all exercises back-to-back, as quickly as possible, with only transition time as rest. At the end of the round, rest for 30 to 90 seconds. Complete 2 to 5 rounds. Kick-sits x 20             Start in…

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